package cn.dingdan.interceptors;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import cn.dingdan.tools.Contans;

public class LoginInterceptors implements HandlerInterceptor{

	@Override
	public void afterCompletion(HttpServletRequest arg0,
			HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
			Object arg2, ModelAndView arg3) throws Exception {
		
	}

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
			Object object) throws Exception {
		object=request.getSession().getAttribute(Contans.USER_SESSION);
		if (object==null) {
			response.sendRedirect(request.getContextPath()+"/login.html");
			return false;
		}
		return true;
	}

}
